need help

What is output by the following code? String s1 = new String("z"); String s2 = new String("z"); boolean b1 = (s1==s2); boolean b2 = (s1.equals(s2)); System. out.print(b1 +"=+b2); What is output by the following code? String s0 = "Java"; char c1 = s0. charAt(1); char c2 = s0.charAt (3); boolean b1=(c1==c2); System.out.print (b1+"n+c1+c2); What is output by the following code? String s0 = "Java"; int i1= s0. indexOf('a'); int i2 =s0.indexOf('a', i1); int i3 =s0 indexOf('a', i1 +1); System.out.print(i1 +""+i2+""+i3)